impertinent vs impertinence

impertinent is not a noun while impertinence is a noun.

Word	Noun	Adjective	Verb	Adverb
impertinent	No	Yes	No	No
impertinence	Yes	No	No	No

impertinent (noun)	impertinence (noun)
	inappropriate playfulness
	the trait of being rude and impertinent; inclined to take liberties
	an impudent statement

impertinent (adjective)	impertinence (adjective)
improperly forward or bold
not pertinent to the matter under consideration
characterized by a lightly pert and exuberant quality